Application Key Performance Indicators for Mobile WiMAX

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Application Key Performance Indicatorsfor Mobile
WiMAX

• Raj JainWashington University in Saint
  Louisjain_at_cse.wustl.edu
• Presentation to WiMAX Forum Application Working
  Group Meeting, Orlando, FL, February 4-9, 2009
• These slides are also available
  athttp//www.cse.wustl.edu/jain/wimax/kpi.htm

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Overview

• What is a Key Performance Indicator
• KPIs for Telecom Applications
• Steps in KPI Study

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What is a Key Performance Indicator

• Gives a good indication of performance
• Commonly used in business
• Metrics to define and measure business goals
• Examples
• GNP (Gross National Product)
• ARPU (Average Revenue Per User)
• Dow Jones Index

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KPIs for Telecom Applications

• Connection Establishment Success Rate
• Connection Drop Rate
• Handover Success Rate
• Throughput
• Block Error Rate
• Ref UTRAN and GERAN KPI (3GPP TR32.814, March
  2007)

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3GPP KPIs Categories

• Retainability Call drop rate
• Availability Cell unavailability
• Integrity Block error rate

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KPIs Complete Set
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Selecting KPIs

• Include
• Performance Time, Rate, Resource
• Integrity Error rate, probability
• Availability Time to failure and duration
• Consider including
• Mean and variance
• Individual and Global
• Selection Criteria
• Low-variability
• Non-redundancy
• Completeness

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Steps in KPI Study

• Key Applications
• For each application
• User perceived performance
• Relationship to measurable quantities
• Precise definition and formula for computation

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KPIs in 3 Planes

• Data Plane User throughput
• Control Plane Scheduling overhead
• Management Plane Faults

Control
Application
Mgmt
TCP/IP
Data
MAC
PHY
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KPIs for All Parts of Networks

• Mobile/stationary Subscriber
• Base Stations
• Base Station to Mobile Subscriber Link
• Cell
• Backbone network

Uplink (UL)
Backhaul
Base Stations
Downlink (DL)
Mobile Station
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Summary

• Application KPIs can be used by service providers
  to set their business goals
• User level KPIs can also be used by major
  customers to compare services
• Need to define KPIs that include key systems and
  subsystems and include operations and data
  transfer

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References

• R. Kreher, UMTS Performance Measurement A
  Practical Guide to KPIs for the UTRAN
  Environment, Wiley, 2006, ISBN0470032499.
• 3GPP, Technical Specification group Services and
  System Aspects Telecommunication management
  UTRAN and GERAN Key Performance Indicators (KPI)
  (Release 7), TR 32.814, V7.0.0, March 2007.

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Acronyms

• EDGE Ehanced Data Rates for GSM Evolution
• GERAN GSM EDGE Radio Access Network
• GSM Global System for Mobile Communicaiton
• KPI Key Performance Indicator
• KQI Key Quality Indicator
• RAT Radio Access Technology
• UMTS Universl Mobile Telecommunications System
• UTRAN UMTS Radio Access Network

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Thank You!